CN105644381A - Electric automobile and thermal management system thereof - Google Patents

Electric automobile and thermal management system thereof Download PDF

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Publication number
CN105644381A
CN105644381A CN201510982179.XA CN201510982179A CN105644381A CN 105644381 A CN105644381 A CN 105644381A CN 201510982179 A CN201510982179 A CN 201510982179A CN 105644381 A CN105644381 A CN 105644381A
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CN
China
Prior art keywords
heat exchanger
electric automobile
thermal management
battery
exchanger tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510982179.XA
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Chinese (zh)
Inventor
陶玉鹏
曾祥兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
Chery Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN201510982179.XA priority Critical patent/CN105644381A/en
Publication of CN105644381A publication Critical patent/CN105644381A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/66Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/66Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

The invention discloses an electric automobile and a thermal management system thereof, and belongs to the technical field of electric automobile power battery systems. The thermal management system comprises a refrigerant cooling device, a first heat exchanger used for heat exchange with an automobile compartment and a second heat exchanger used for cooling a battery. The output end of the refrigerant cooling device is connected with the input end of the first heat exchanger and the input end of the second heat exchanger. The thermal management system further comprises a pressure regulating valve and a check valve. One end of the pressure regulating valve is connected with the output end of the first heat exchanger, and the other end of the pressure regulating valve is connected with the input end of the refrigerant cooling device. One end of the check valve is connected with the output end of the second heat exchanger, and the other end of the check valve is connected to a joint of a pipeline between the pressure regulating valve and the refrigerant cooling device. According to the thermal management system, the pressure regulating valve and the check valve are added to a refrigerant circulating loop, so that evaporation pressure of the first heat exchanger and evaporation pressure of the second heat exchanger are independent, and heat exchange between the second heat exchanger and the battery is carried out without the influence of the first heat exchanger.

Description

A kind of electric automobile and heat management system thereof
Technical field
The present invention relates to power battery system of electric vehicle technical field, more specifically, particularly to a kind of thermal management system of electric automobile.
Background technology
Along with socioeconomic growing, energy demand improves further, and the cry of new energy technology is more and more higher, and Development of EV has been trend of the times. Battery is as the core of electric automobile, and the performance and used life of battery directly determines performance and the cost of electric automobile. For keeping properly functioning, service behaviour and the service life of battery, battery needs to run in certain temperature range; Accordingly, it would be desirable to will control to include in thermal management system of electric automobile to the temperature of battery.
At present, thermal management system of electric automobile is responsible for the temperature of whole electric automobile is controlled, for instance, the railway carriage temperature of electric automobile is controlled, the battery temperature of electric automobile is controlled. Wherein, First Heat Exchanger that at present this thermal management system of electric automobile includes refrigerant cooler and railway carriage carries out heat exchange and the second heat exchanger lowered the temperature for battery, the outfan of this refrigerant cooler is connected by pipeline with the input of First Heat Exchanger, the second heat exchanger input respectively, the outfan of First Heat Exchanger and the pipeline of the second heat exchanger outfan are connected with the input of refrigerant cooler again through pipeline after linking together. During work, cold-producing medium is exported on pipeline by refrigerant cooler, then this cold-producing medium is divided into two parts, a part inputs to First Heat Exchanger, another part inputs to the second heat exchanger, this two parts cold-producing medium flow back in refrigerant cooler after carrying out heat exchange with railway carriage and battery respectively in first, second heat exchanger.
When implementing prior art, inventor's invention prior art at least includes following shortcoming:
Because the pipeline of the outfan of First Heat Exchanger and the second heat exchanger connects, cause that two heat exchangers have identical evaporating pressure and evaporating temperature, so for battery regulate temperature heat exchanger cannot be independent keep within pressure and temperature, have impact on and regulate temperature capability for battery, it is likely to decrease service behaviour and the service life of battery, or causes that battery cannot be properly functioning.
Summary of the invention
It is contemplated that at least solve one of problems of the prior art, for this, the embodiment of the present invention provides a kind of thermal management system of electric automobile.Described technical scheme is as follows:
The present invention provides a kind of thermal management system of electric automobile, comprising:
Refrigerant cooler, for carrying out the First Heat Exchanger of heat exchange and the second heat exchanger for lowering the temperature for battery with railway carriage, the outfan of refrigerant cooler divides the input with First Heat Exchanger, the input of the second heat exchanger is connected, and described heat management system also includes:
Pressure-regulating valve and check-valves, pressure-regulating valve one end is connected with the outfan of First Heat Exchanger, the other end is connected with the input of refrigerant cooler, check-valves one end is connected with the outfan of the second heat exchanger, on the node that the other end is connected between pressure-regulating valve and refrigerant cooler pipeline.
Further, the second heat exchanger includes the first heat exchanger tube and for carrying out the second heat exchanger tube of heat exchange with the first heat exchanger tube;
Second heat exchanger tube is for carrying out heat exchange with battery;
First heat exchanger tube one end is connected with refrigerant cooler, and the other end is connected with check-valves.
Further, the second heat exchanger tube is end to end closed circuit pipe, and it is fitted on battery, for carrying out heat exchange with battery.
Further, described heat management system also includes the 3rd heat exchanger tube;
One end of second heat exchanger tube connects the 3rd heat exchanger tube, and the other end is connected to water circulating pump, and the other end of the 3rd heat exchanger tube is connected with the other end of water circulating pump;
3rd heat exchanger tube is fitted on battery, for carrying out heat exchange with battery.
Further, described heat management system also includes adding flow container, and its one end is connected with the second heat exchanger tube, and the other end is connected with water circulating pump.
Further, refrigerant cooler includes compressor and condenser;
One end of compressor is connected with condenser, and condenser is connected with First Heat Exchanger, the second heat exchanger respectively.
Further, described heat management system also includes the first expansion valve and the second expansion valve;
First expansion valve is connected on the pipeline between condenser and First Heat Exchanger, and the second expansion valve is connected on the pipeline between condenser and the second heat exchanger.
Further, First Heat Exchanger is A/C evaporator, and pressure-regulating valve is evaporating pressure regulating valve.
Further, the second heat exchanger is water cooling heat exchanger.
On the other hand, present invention also offers a kind of electric automobile, including above-mentioned thermal management system of electric automobile.
The technical scheme that the embodiment of the present invention provides has the benefit that
By increasing pressure-regulating valve and check-valves, so that the evaporating pressure of First Heat Exchanger and the second heat exchanger is completely independent, First Heat Exchanger and the second heat exchanger each realize independent cooling-down effect, second heat exchanger can not be maintained at a relatively low evaporating pressure by the impact of evaporating pressure in First Heat Exchanger, the coolant through the second heat exchanger is battery cooling is made to have temperature drop by a relatively large margin, ensure that the second heat exchanger and battery carry out the effect of heat exchange, battery is made to maintain in suitable temperature range, thus ensure that the high efficient and reliable of battery is run.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 show the structural representation of a kind of thermal management system of electric automobile that the embodiment of the present invention provides;
Fig. 2 show the structural representation of a kind of thermal management system of electric automobile that the embodiment of the present invention provides;
Fig. 3 show the structural representation of a kind of thermal management system of electric automobile that the embodiment of the present invention provides;
In figure, the relation between each parts and label is as follows:
1, compressor;
2, condenser;
31, the first expansion valve;
32, the second expansion valve;
4, First Heat Exchanger;
5, the second heat exchanger;
6, flow container is added;
7, water circulating pump;
8, battery;
9, pressure-regulating valve;
10, check-valves;
11, the first heat exchanger tube;
12, the second heat exchanger tube;
13, the 3rd heat exchanger tube.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Present embodiments provide a kind of thermal management system of electric automobile, as shown in Figure 1-Figure 3, including refrigerant cooler, for carrying out the First Heat Exchanger 4 of heat exchange and the second heat exchanger 5 for lowering the temperature for battery 8 with railway carriage, the outfan of refrigerant cooler divides the input with the input of First Heat Exchanger 4, the second heat exchanger 5 to be connected, and described heat management system also includes:
Pressure-regulating valve 9 and check-valves 10, pressure-regulating valve 9 one end is connected with the outfan of First Heat Exchanger 4, the other end is connected with the input of refrigerant cooler, check-valves 10 one end is connected with the outfan of the second heat exchanger 5, and the other end is connected between pressure-regulating valve 9 and refrigerant cooler on the node of pipeline.
The present embodiment is by increasing pressure-regulating valve 9 and check-valves 10, so that the evaporating pressure of First Heat Exchanger 4 and the second heat exchanger 5 is completely independent, second heat exchanger 5 can not be maintained at a relatively low evaporating pressure by the impact of evaporating pressure in First Heat Exchanger 4, and First Heat Exchanger 4 and the second heat exchanger 5 each realize independent cooling-down effect.
It addition, the thermal management system of electric automobile 1 that the present embodiment provides also has other technical characteristic following.
In the present embodiment, specifically, First Heat Exchanger 4 is A/C evaporator, and pressure-regulating valve 9 is evaporating pressure regulating valve.
As Figure 1-3, in the present embodiment, refrigerant cooler includes compressor 1 and condenser 2; One end of compressor 1 is connected with condenser 2, and condenser 2 is connected with First Heat Exchanger the 4, second heat exchanger 5 respectively; Compressor 1 is power source, is used for driving refrigerant cycle; Condenser 2 is the device cooled down by cold-producing medium.
In the present embodiment, as Figure 1-3, described heat management system also includes the first expansion valve 31 and the second expansion valve 32; First expansion valve 31 is connected on the pipeline between condenser 2 and First Heat Exchanger 4, and the second expansion valve 32 is connected on the pipeline between condenser 2 and the second heat exchanger 5; First expansion valve 31 and the second expansion valve 32 are for controlling the flow of cold-producing medium.
In the present embodiment, as Figure 1-3, the second heat exchanger includes the first heat exchanger tube 11, and first heat exchanger tube 11 one end is connected with refrigerant cooler, and the other end is connected with check-valves 10; First heat exchanger tube 11 is for participating in the heat exchange of battery 8.
As it is shown in figure 1, alternatively, the first heat exchanger tube 11 can be fitted on battery 8, for carrying out heat exchange with battery 8.
Specifically, the cold-producing medium of the first heat exchanger tube 11 can be freon.
As in figure 2 it is shown, in the present embodiment, the second heat exchanger 5 also includes the second heat exchanger tube 12 for carrying out heat exchange with the first heat exchanger tube 11;Second heat exchanger tube 12 is for carrying out heat exchange with battery 8.
As in figure 2 it is shown, alternatively, the second heat exchanger tube 12 is end to end closed circuit pipe, and it is fitted on battery 8, for carrying out heat exchange with battery 8.
Specifically, the second heat exchanger 5 is water cooling heat exchanger; Second heat exchanger tube 12 can be water.
As it is shown on figure 3, alternatively, described heat management system also includes the 3rd heat exchanger tube 13; One end of second heat exchanger tube 12 connects the 3rd heat exchanger tube 13, and the other end is connected to water circulating pump 7, and the other end of the 3rd heat exchanger tube 13 is connected with the other end of water circulating pump 7; 3rd heat exchanger tube 13 is fitted on battery 8, for carrying out heat exchange with battery 8; Water circulating pump 7 is power source, for driving the circulation of water.
As it is shown on figure 3, alternatively, described heat management system also includes adding flow container 6, and its one end is connected with the second heat exchanger tube 12, and the other end is connected with water circulating pump 7; Can also being connected with water circulating pump 7 one end it should be noted that add flow container 6, the other end and the 3rd heat exchanger tube 13 connect, and the both connected modes adding flow container 6 are all possible.
Water circulating pump 7 extracts and adds water in flow container 6, drains into and is fitted in the 3rd heat exchanger tube 13 of battery 8 and battery 8 carries out heat exchange, cools down then through water cooling heat exchanger, return to and add in flow container 6 after heat exchange; Because water temperature influence density and stereomutation are substantially, adding flow container 6 one aspect with the water in supplementary pipeline, on the other hand after water temperature raises, the density of water reduces, volume increases, and the water under now pipeline accommodation not can flow into and add flow container 6.
As Figure 1-3, the work process of the present embodiment is as follows:
Compressor 1 extracts the refrigerant vapour of low-temp low-pressure, compression heel row is to condenser 2, refrigerant liquid is become after condensed cooling, by the first expansion valve 31 and the second expansion valve 32, respectively enter in A/C evaporator and the first heat exchanger tube 11, the cold-producing medium flowed out from A/C evaporator passes through evaporating pressure regulating valve 9, after converging with the cold-producing medium flowing out through check-valves 10 from the first heat exchanger tube 11, enters back into compressor 1; First heat exchanger tube 11 can be battery 8 heat exchange by mode as Figure 1-3.
In the present embodiment, owing to being provided with evaporating pressure regulating valve 9, when in A/C evaporator, pressure raises, A/C evaporator outlet refrigerant flow increases, and pressure will decline; When in A/C evaporator, pressure declines, A/C evaporator outlet refrigerant flow reduces, and pressure will raise, so also just maintaining the stability of A/C evaporator evaporating pressure. And water cooling heat exchanger may remain in a relatively low evaporating pressure, and due to the effect of check-valves 10, it is possible to not by the impact of evaporating pressure in A/C evaporator; Therefore, the coolant through water cooling heat exchanger is made to have bigger temperature drop, can ensure that the coolant of lower temperature carries out heat exchange with battery 8, increase heat exchange amount, battery 8 is made to maintain in suitable temperature range, ensure that the high efficient and reliable of battery 8 is run, and make battery 8 can play optimum performance.
Implement two
The embodiment of the present invention additionally provides a kind of electric automobile, including the thermal management system of electric automobile of embodiment one or embodiment two.
Because the thermal management system of electric automobile structure of the thermal management system of electric automobile in the present embodiment with embodiment one or embodiment two completes identical, therefore thermal management system of electric automobile is not being repeated in the present embodiment.
The First Heat Exchanger 4 of electric automobile and the evaporating pressure of the second heat exchanger 5 that the present embodiment provides are completely independent, second heat exchanger 5 can not be maintained at a relatively low evaporating pressure by the impact of evaporating pressure in First Heat Exchanger 4, First Heat Exchanger 4 and the second heat exchanger 5 each realize independent cooling-down effect, therefore both ensured that the temperature in compartment was regulated by First Heat Exchanger 4, also effectively ensured that the temperature of battery 8 was regulated by the second heat exchanger 5.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.

Claims (10)

1. a thermal management system of electric automobile, including refrigerant cooler, for carrying out the First Heat Exchanger of heat exchange and the second heat exchanger for lowering the temperature for battery with railway carriage, the outfan of described refrigerant cooler divides the input with the input of described First Heat Exchanger, described second heat exchanger to be connected, it is characterized in that, described heat management system also includes:
Pressure-regulating valve and check-valves, described pressure-regulating valve one end is connected with the outfan of described First Heat Exchanger, the other end is connected with the input of described refrigerant cooler, described check-valves one end is connected with the outfan of described second heat exchanger, and the other end is connected between described pressure-regulating valve and described refrigerant cooler on the node of pipeline.
2. thermal management system of electric automobile according to claim 1, it is characterised in that described second heat exchanger includes the first heat exchanger tube and for carrying out the second heat exchanger tube of heat exchange with the first heat exchanger tube;
Described second heat exchanger tube is for carrying out heat exchange with described battery;
Described first heat exchanger tube one end is connected with described refrigerant cooler, and the other end is connected with described check-valves.
3. thermal management system of electric automobile according to claim 2, it is characterised in that described second heat exchanger tube is end to end closed circuit pipe, its laminating on the battery, is used for carrying out heat exchange with described battery.
4. thermal management system of electric automobile according to claim 2, it is characterised in that also include the 3rd heat exchanger tube;
One end of described second heat exchanger tube connects described 3rd heat exchanger tube, and the other end is connected to water circulating pump, and the described other end of the 3rd heat exchanger tube is connected with the other end of described water circulating pump;
Described 3rd heat exchanger tube is fitted on the battery, for carrying out heat exchange with described battery.
5. thermal management system of electric automobile according to claim 4, it is characterised in that also include adding flow container, its one end is connected with described second heat exchanger tube, and the other end is connected with described water circulating pump.
6. the thermal management system of electric automobile according to any one of claim 1-5, it is characterised in that described refrigerant cooler includes compressor and condenser;
One end of described compressor is connected with described condenser, and described condenser is connected with described First Heat Exchanger, the second heat exchanger respectively.
7. thermal management system of electric automobile according to claim 6, it is characterised in that also include the first expansion valve and the second expansion valve;
Described first expansion valve is connected on the pipeline between described condenser and described First Heat Exchanger, and described second expansion valve is connected on the pipeline between described condenser and described second heat exchanger.
8. thermal management system of electric automobile according to claim 7, it is characterised in that described First Heat Exchanger is A/C evaporator, described pressure-regulating valve is evaporating pressure regulating valve.
9. thermal management system of electric automobile according to claim 6, it is characterised in that described second heat exchanger is water cooling heat exchanger.
10. an electric automobile, it is characterised in that include the thermal management system of electric automobile as described in any one of claim 1-9.
CN201510982179.XA 2015-12-23 2015-12-23 Electric automobile and thermal management system thereof Pending CN105644381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510982179.XA CN105644381A (en) 2015-12-23 2015-12-23 Electric automobile and thermal management system thereof

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Application Number Priority Date Filing Date Title
CN201510982179.XA CN105644381A (en) 2015-12-23 2015-12-23 Electric automobile and thermal management system thereof

Publications (1)

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CN105644381A true CN105644381A (en) 2016-06-08

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CN112290113A (en) * 2020-09-22 2021-01-29 广州汽车集团股份有限公司 Direct cooling system for automobile power battery and automobile
CN112339524A (en) * 2020-11-09 2021-02-09 东风汽车股份有限公司 Thermal management system of pure electric commercial vehicle and use method

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